Quote:
Originally Posted by 1347
Unless you bought some crap lifter, or your lifters had a defect, I would be looking at other things. Wiping out 2 cams in that period of time appears you may something else going on. My son bought a set of Clay Smith made in USA lifters for his 350 300hp combo, which they claim are the original Johnson Lifters, broke them in with just the outers, and has had no problems this year.
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Little difference in Valves and springs in these combinations might be a point also.